package cn.itcast.netty.c3;

import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.*;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.channel.socket.nio.NioSocketChannel;
import lombok.extern.slf4j.Slf4j;

@Slf4j
public class TestPipeline {
    public static void main(String[] args) {
        new ServerBootstrap()
                .group(new NioEventLoopGroup())
                .channel(NioServerSocketChannel.class)
                .childHandler(new ChannelInitializer<NioSocketChannel>() {
                    @Override
                    protected void initChannel(NioSocketChannel ch) throws Exception {
                        //通过channel拿到pipeline
                        ChannelPipeline pipeline = ch.pipeline();
                        //添加处理器
                        pipeline.addLast("h1",new ChannelInboundHandlerAdapter(){
                            @Override
                            public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
                                log.debug("1");
                                super.channelRead(ctx, msg);
                            }
                        });

                        pipeline.addLast("h2",new ChannelInboundHandlerAdapter(){
                            @Override
                            public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
                                log.debug("2");
                                super.channelRead(ctx, msg);
                            }
                        });

                        pipeline.addLast("h3",new ChannelInboundHandlerAdapter(){
                            @Override
                            public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
                                log.debug("3");
                                // ch.writeAndFlush 是从tail向前找出站处理器 ctx.writeAndFlush是从当前对象h3开始找出站处理器
//                                ch.writeAndFlush("aaaa");
//                                ctx.writeAndFlush("aaaa");
                                super.channelRead(ctx, msg);
                            }
                        });

                        pipeline.addLast("h4",new ChannelOutboundHandlerAdapter(){
                            @Override
                            public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) throws Exception {
                                log.debug("4");
                                super.write(ctx, msg, promise);
                            }
                        });

                        pipeline.addLast("h5",new ChannelOutboundHandlerAdapter(){
                            @Override
                            public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) throws Exception {
                                log.debug("5");
                                super.write(ctx, msg, promise);
                            }
                        });

                        pipeline.addLast("h6",new ChannelOutboundHandlerAdapter(){
                            @Override
                            public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise) throws Exception {
                                log.debug("6");
                                super.write(ctx, msg, promise);
                            }
                        });
                    }
                }).bind(8080);
    }
}
